1. git columns gets real confusing if you have more data than fits the screen and you need to scroll. Numbers would help...
2. git maintenance sounds great but since I do a lot of rebases and stuff, I am worried: does this lose loose objects faster than gc would? I see gc is disabled but it's not clear.
3. Regarding git blame a little known but super useful script is https://github.com/gnddev/git-blameall . (I mean, it's so little known I myself needed to port it to Python 3 and I am no Python developer by any stretch.)